Peçeneg

/petʃeneɡ/

Cases

SingularPluralWhen to use it
nominativePeçenegthe PechenegPeçeneglethe Pechenegsthe plain dictionary form — the doer of the sentence
genitivePeçenegnithe Pecheneg'sPeçeneglenithe Pechenegs'the owner — whose it is
accusativePeçenegnithe Pecheneg (as the object)Peçeneglenithe Pechenegs (as the object)a specific, known object — whom or what
dativePeçeneggeto the PechenegPeçeneglegeto the Pechenegsdirection or recipient — to where, to whom
locativePeçenegdeat / in the PechenegPeçenegledeat / in the Pechenegswhere it is; also having — mende bar, "I have it"
ablativePeçenegdenfrom the PechenegPeçenegledenfrom the Pechenegswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
myPeçenegimmy PechenegPeçeneglerimmy Pechenegs
yourPeçenegingyour PechenegPeçenegleringyour Pechenegs
his / herPeçenegihis / her PechenegPeçeneglerihis / her Pechenegs
ourPeçenegibizour PechenegPeçenegleribizour Pechenegs
you all'sPeçenegigizyou all's PechenegPeçeneglerigizyou all's Pechenegs
theirPeçenegleritheir PechenegPeçenegleritheir Pechenegs

The overlap in the last rows is real, not a mistake: Peçenegleri can mean "his / her Pechenegs", "their Pecheneg", or "their Pechenegs" — context decides.